CN201963878U

CN201963878U - Oil seal ring

Info

Publication number: CN201963878U
Application number: CN2011200585178U
Authority: CN
Inventors: 郑伟平
Original assignee: QUANZHOU QIXING MACHINERY CO Ltd
Current assignee: QUANZHOU QIXING MACHINERY CO Ltd
Priority date: 2011-03-04
Filing date: 2011-03-04
Publication date: 2011-09-07
Anticipated expiration: 2021-03-04

Abstract

The utility model relates to a rotating shaft sealing element, and provides an oil seal ring with capacity of bearing high-speed rotation of large engineering machinery, no oil leakage and long service life. The oil seal ring comprises a ring body and a sealing face on the end face of one side of the ring body, wherein the sealing face comprises an inside diameter, an outside diameter and an end face formed by extending from the inside diameter to the outside diameter; the end face is in circular bevel transition from the outside diameter to the inside diameter; and the inclination degree of the circular bevel is 1 to 3 degrees. The oil seal ring is widely applied to seal between a travelling mechanism axle and a bearing of large engineering machinery such as an excavator or a bulldozer.

Description

A kind of oil seal ring

Technical field

The utility model relates to a kind of rotating shaft sealing element, particularly a kind of big machinery traveller seal oil seal ring.

Background technique

Crawler wheel bearing power is strong, strong to landform adaptability, therefore extensively be used as excavator, the traveller of big machineries such as bulldozer, the crawler wheel generally comprises wheel shaft, be set in the wheel body on the wheel shaft and be located at wheel shaft and wheel body between bearing, because of the crawler wheel load great, its track roller, upper saw pulley, driving wheel, need the oil storage sealing to protect lubricating between wheel shaft and the bearing in the support roller, avoid when car body is advanced, wearing and tearing too greatly because of frictional force, its oil storage seal arrangement is to be equipped with end cover in the both sides of wheel body, on the wheel shaft, be provided with a pair of mutual float grease seal ring that docks between end cover and the wheel body, go back clips on the two oil seal ring circular cones and between the end cover inner ring and establish an O RunddichtringO, an oil seal ring is static in the using process, the use that is rotatably assorted of another oil seal ring, two oil seal rings also with it correspondence be divided into and decide ring and rotating ring, two oil seal ring sealing surfaces revolution relatively also closely contact, as Fig. 4, two oil seal rings are by the sealing surface on the one side end face 1 ' butt joint mutually, minute surface contact revolution relatively realizes sealing, because two oil seal ring sealing surfaces are minute surface contacts, when running up, two oil seal rings relatively rotate, the frictional force that produces is big, and the metal particle under grinding is easily with the sealing surface galled spots, cause sealing surface wear, oil leakage phenomenon appears, influence lubricating between wheel hub and the bearing, cause car body when advancing, to wear and tear too greatly because of frictional force.

Summary of the invention

The purpose of this utility model is to overcome the deficiency of above-mentioned technology, bears that large-scale engineering machinery runs up, the oil seal ring of oil-proof, long service life thereby provide a kind of.

The technological scheme that the utility model adopted is such: a kind of oil seal ring, comprise the sealing surface that is provided with on ring body and the one side end face, described sealing surface comprises that internal diameter, external diameter and interior radial outer diameter radial component extend formed end face, described end face is excessive by outer radial internal diameter direction circular arc inclined-plane, and described circular arc inclined-plane inclination is 1 to 3 degree.

Further: described circular arc inclined-plane inclination is 2.5 degree.

By adopting the aforementioned techniques scheme, the beneficial effects of the utility model are: the utility model oil seal ring sealing surface, comprise internal diameter, external diameter and interior radial outer diameter radial component extend formed end face, described end face is excessive by outer radial internal diameter direction circular arc inclined-plane, the described circular arc inclined-plane number of degrees are 2.5 degree, make the plane minute surface contact of original two oil seal ring sealing surfaces make linear contact seal into, reduced the frictional force of two oil seal ring sealing surfaces, because the sealing surface between two oil seal rings is linear contact, metal particle under grinding also is difficult for stopping on two oil seal ring sealing surfaces surface, reduced the scratch of sealing surface, having prevented that sealing surface is destroyed causes leakage of oil, has prolonged the working life of oil seal ring.

Description of drawings

Fig. 1 is the utility model example structure schematic representation;

Fig. 2 is the utility model example I place enlarged view;

Fig. 3 is the utility model embodiment user mode structural representation;

Fig. 4 is a prior art oil seal ring structural representation.

Embodiment

Further specify the utility model below in conjunction with the drawings and specific embodiments.

As Fig. 1, a kind of oil seal ring, comprise and adopt the sealing surface 2 that is provided with on float grease seal ring body 1 that special cast iron makes and the one side end face, described sealing surface 2 comprises that internal diameter 21, external diameter 22 and internal diameter 21 extend formed end face 23 to external diameter 22 radial components, described end face 23 is excessive to internal diameter 21 direction circular arc inclined-planes by external diameter 22, described circular arc inclined-plane inclination is 2.5 degree, Fig. 2, and described circular arc inclined-plane inclination is meant the number of degrees of the angle a between arc surface 3 and end face 23 outermost.

As Fig. 3 is the utility model embodiment user mode structural representation, this novel plane minute surface contact original two oil seal ring sealing surfaces makes the linearity contact of sealing surface into, reduced the frictional force that is produced when two oil seal rings relatively rotate, because the sealing surface between two oil seal rings is linear contact, metal particle under grinding also is difficult for stopping on two oil seal ring sealing surfaces surface, reduce the scratch of sealing surface, prevented that sealing surface is destroyed and caused leakage of oil, prolonged the working life of oil seal ring.

More than show and described basic principle of the present utility model and major character and advantage thereof; the technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the explanation just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall in claimed the utility model scope, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. oil seal ring, comprise the sealing surface (2) that is provided with on ring body (1) and the one side end face, described sealing surface (2) comprises that internal diameter (21), external diameter (22) and internal diameter (21) extend formed end face (23) to external diameter (22) radial component, it is characterized in that: described end face (23) is excessive to internal diameter (21) direction circular arc inclined-plane by external diameter (22), and described circular arc inclined-plane inclination is 1 to 3 degree.

2. a kind of oil seal ring according to claim 1 is characterized in that: described circular arc inclined-plane inclination is 2.5 degree.